| 摘要 |
PROBLEM TO BE SOLVED: To provide an agent for photo dynamic therapy, an anticancer agent, a new quinoxaline derivative and a pharmaceutical composition. SOLUTION: The new quinoxaline derivative or its pharmacologically acceptable salt or the like comprises a compound represented by formula IIa (wherein R<SP>21a</SP>and R<SP>21b</SP>are each an imino group, which may be substituted with a lower alkyl group, O or the like; R<SP>22a</SP>and R<SP>21b</SP>are each an amino group which may be mono- or di-substituted with a lower alkyl group, O, OH or the like; Z is a single bond or the like; n<SB>a</SB>and n<SB>b</SB>are each an integer of 0-3). COPYRIGHT: (C)2004,JPO |
